Abstract: A heat transfer plate comprises upper, center and lower end portions, the latter adjoining the center portion along an upper borderline and comprising first and second portholes and a distribution area having a distribution pattern. The distribution pattern comprises distribution ridges, a respective top portion of which extends in a plane and has rounded first, second, third and fourth corners. The distribution ridges extend along plural separated imaginary ridge lines from the upper borderline towards the first porthole. For each of a number of the distribution ridges extending along a top ridge line closest to the second porthole, the first corner's curvature radius is larger than the second corner's curvature radius, the first/second corners are on opposite sides of the top ridge line, the second corner is closer to the second porthole than the first corner, and the first/third corners are on the same side of the top ridge line.

Abstract: A centrifugal separator includes a separator bowl delimiting therein a separation space and being configured to rotate about a rotational axis and nozzle members arranged peripherally at the separator bowl. Each nozzle member forms a nozzle outlet providing a passage from the separation space to a space outside the separator bowl. The centrifugal separator includes a protective member arranged downstream of each nozzle outlet at an outer periphery of the separator bowl. The nozzle member secures the protective member in relation to the separator bowl, at least in one circumferential direction of the separator bowl.

Abstract: A system for treating a fluid used for cleaning exhaust gas from pollutants including particulate matter comprises a circulation tank for accommodating the fluid, the circulation tank comprising an outlet for bleeding off part of the fluid. A first device is provided for adding a first chemical to the part of the fluid, wherein the first chemical comprises a coagulant. A separation device receives a mixture comprising the part of the fluid and the first chemical, and separates the mixture into a first fraction and a second fraction, which first fraction contains more particulate matter than the second fraction. A flocculation arrangement comprising a first flocculator device is arranged between the separation device and the first device to retain the part of the fluid and the first chemical to promote agglomeration of particulate matter comprised in the part of the fluid before the mixture is received by the separation device.

Abstract: A rotary positive displacement pump comprises a transmission housing having front and rear walls and rotationally supporting first and second drive shafts having constantly meshing gears such that the drive shafts rotate in opposite directions. A rotor casing connected to a front side of the housing has rear and front walls and a circumferential side wall defining an interior pumping cavity. The casing houses first and second rotors drivingly connected to the first and second drive shafts to provide a positive pumping effect on fluid product entering the cavity. The front and rear walls of the housing define an intermediate space through which the drive shafts extend. A first guard is located in the intermediate space and surrounds the drive shafts, or first and second guards are located in the intermediate space and surround the first and second drive shafts respectively, for protecting a person from contacting the drive shafts.

Abstract: A wet surface air cooler (WSAC), including an evaporative spiral plate heat exchanger for flowing a process medium therethrough, a spray system for spraying a cooling medium directly onto the evaporative spiral plate heat exchanger and a fan for causing air to flow through the evaporative spiral plate heat exchanger, the combination of the sprayed cooling medium onto the evaporative spiral plate heat exchanger and the air flowing therethrough causes the cooling medium to at least partially evaporate to lower the temperature of the process medium.

Abstract: A rotary positive displacement pump comprises a housing rotationally supporting first and second parallel and axially extending drive shafts having constantly meshing gears such that the drive shafts rotate in opposite directions. A rotor casing is connected to a front side of the housing and has axial rear and front walls and a circumferential side wall jointly defining a pumping cavity. The casing houses first and second rotors drivingly connected to the first and second drive shafts respectively. The rotors rotate in opposite directions and mutually interact to provide a positive pumping effect on fluid product entering the cavity. First and second sealing arrangements prevent leakage of fluid product from the cavity towards the rear side of the casing along the first/second drive shafts. A heating device is detachably fastened to the rear casing wall to heat the casing, the first/second sealing arrangements and/or any fluid product within the casing.

Abstract: Disclosed is a system and method for extraction of soluble flavoring components from a solid flavor carrier material into a brewing liquid. The system comprises a process vessel and a filtration device. The process vessel comprises an inlet for solid flavor carrier material, a circulation inlet for material comprising brewing liquid and a circulation outlet for material comprising brewing liquid. The filtration device is arranged for separation of solid components from material comprising brewing liquid and is a cross-flow filtration device comprising at least one cross-flow filter, a circulation inlet for material comprising brewing liquid, a circulation outlet for unfiltered material comprising brewing liquid and a closable outlet for filtered material comprising brewing liquid. The process vessel and the filtration device are comprised in a recirculation loop.

Abstract: A centrifugal separator for separating at least one liquid phase and a solids phase from a liquid feed mixture includes a frame, a drive member and a rotating part. The drive member is configured to rotate the rotating part in relation to the frame around an axis of rotation. The rotating part includes a centrifuge bowl enclosing a separation space and a sludge space. The separation space includes a stack of separation discs arranged coaxially around the axis of rotation and the sludge space is arranged radially outside said stack of separation discs. The centrifuge bowl includes an inlet for receiving the liquid feed mixture, at least one liquid outlet for a separated liquid phase, and at least one sludge outlet for a separated solids phase. The upper inner surface of the sludge space forms an upper sludge space angle ? relative the axis of rotation as seen in an axial plane.

Abstract: A centrifugal separator for separating a liquid heavy phase and light phase from a liquid feed mixture includes a drive member and a rotating part. The rotating part includes a centrifuge rotor enclosing a separation space and a sludge space. The centrifugal separator includes an inlet for receiving the liquid feed mixture into the centrifuge rotor, a first outlet for the liquid heavy phase and a second outlet for the liquid light phase. The centrifugal separator includes a conduit system for recirculating separated liquid heavy phase discharged from a first outlet to the sludge space within the centrifuge rotor without mixing the recirculated separated liquid heavy phase with the liquid feed mixture. Sludge outlets, other than the first and second outlets, discharge sludge separated from said liquid feed mixture. A method for separating a liquid heavy phase and a liquid light phase from a liquid feed mixture is also disclosed.

Abstract: A heat exchanger plate, a plate heat exchanger for evaporation of a first fluid, and a method of making a plate heat exchanger are disclosed. The heat exchanger plate includes a heat exchanger area extending in parallel with an extension plane of the heat exchanger plate, an edge area extending around the heat exchanger area, a number of portholes extending through the heat exchanger area, and a peripheral rim surrounding a first porthole of the number of portholes and extending transversely to the extension plane from a root end to a top end with a rim height perpendicular to the extension plane. The heat exchanger plate includes at least one restriction hole extending through the peripheral rim and having a hole height perpendicular to the extension plane.

Abstract: A centrifugal separator includes a rotor arrangement and a drive arrangement. A user of electric energy is arranged in the rotor arrangement. The centrifugal separator includes a rotary transformer, the rotary transformer including a transformer stator and a transformer rotor. The transformer stator and the transformer rotor are arranged adjacent to each other with an airgap therebetween. The transformer rotor includes a secondary coil and is rotatable together with the rotor arrangement. The secondary coil is electrically connected to the user of electric energy arranged in the rotor arrangement for providing the user of electric energy with an electric current. The user of electric energy may be an actuator, and/or a sensor, and/or a control unit.

Abstract: A gasket arrangement comprises a sealing part for sealing between two heat transfer plates, which each comprises a number >1 of port holes. An attachment part is arranged to attach the gasket arrangement to one of the heat transfer plates. The sealing part comprises an annular outer sealing portion arranged to extend along at least a part of a respective outer edge of the heat transfer plates and enclose the portholes, and an annular inner sealing portion enclosed by the outer sealing portion and arranged to enclose at least one of the port holes. The attachment part is enclosed by the outer sealing portion, is arranged on an outside of the inner sealing portion and comprises a fastening attachment portion arranged to be fastened to a first side of the one of the heat transfer plates by an adhesive mechanism.

Abstract: A method for operating a bioprocessing system includes producing a cell culture mixture in a fermentor, conducting a flow of cell culture mixture from the fermentor into an interior of a centrifugal separator including a surface enlarging insert, simultaneously with the step of producing the cell culture mixture, and returning continuously from the interior of the centrifugal separator a flow of liquid to the fermentor, simultaneously with the steps of producing the cell culture mixture and conducting the flow of cell culture mixture.

Abstract: A retractable cleaning apparatus for spray cleaning of pipes or vessels comprises a rotatable spray head configured to spray the interior of the pipes or vessels with a cleaning liquid. The rotatable spray head is linearly movable between a retracted position and a cleaning position along a longitudinal axis of the rotatable spray head. The rotatable spray head is rotatable about the longitudinal axis of the rotatable spray head independent of a flow of the cleaning liquid. The rotatable spray head is rotatable with an angular velocity that is independent of the flow of the cleaning liquid. The angular velocity may be within a range of 0.1-1.3 radians per second. A system including a retractable cleaning apparatus is also disclosed.

Abstract: A device for continuously separating flowable materials of different densities of a suspension includes: a drum that is rotatably supported about an axis of rotation, that is rotatable about the axis of rotation by a drum motor, and that surrounds a hollow space; a screw conveyor that is rotatably supported about the axis of rotation and is at least partially arranged in the hollow space and that is rotatable about the axis of rotation by a screw conveyor motor; an inflow pipe for supplying the suspension to the hollow space, wherein the drum has an outflow for the removal of a centrate acquired from the suspension from the hollow space; and the outflow section has a free jet section in which the centrate forms a free jet; and a measurement device by which the transmission and/or the reflection of the centrate in the free jet section can be contactlessly determined.

Abstract: A protecting collar for a centrifugal separator is arranged to rotate with a rotatable part of the centrifugal separator and includes a cavity provided with an inner wall including a first inner peripheral surface portion and an inner abutment surface; a first and a second opening of the cavity, which first opening has a larger diameter than the second opening; an outer wall including an outer peripheral surface and an outer abutment surface. The protecting collar includes a lubricant barrier generating element arranged in the first inner peripheral surface portion, which lubricant barrier generating element is configured to prevent the lubricant to pass the lubricant barrier generating element during a rotational movement of the protecting collar. The lubricant barrier generating element is a helical groove formed in the first inner peripheral surface portion. A centrifugal separator includes the protecting collar.

Abstract: In a method of greasing a decanter centrifuge, each beating of the decanter centrifuge is located in a bearing housing and at least one bearing housing has a grease flow meter. The grease flow meter is connected to a control unit. The method includes generating a greasing operation when the operating time of the decanter centrifuge is equal to or exceeds a specific time interval between greasing operations. The greasing operation includes generating a start signal in the control unit, measuring an amount of grease injected into the bearing housing by using the flow meter, and generating a stop signal in the control unit when the amount of grease injected into the bearing housing is equal to or exceeds a specific amount of grease to be injected at each greasing operation.

Abstract: A heat transfer plate comprises an upper end portion adjoining a center portion along an upper border line and comprising first and second port holes and an upper distribution pattern comprising upper distribution ridges and valleys. The upper distribution ridges extend along imaginary upper ridge lines from the upper border line towards the first port hole. The upper distribution valleys extend along imaginary upper valley lines from the upper border line towards the second port hole. The imaginary upper ridge lines and valley lines cross in plural upper cross points. In plural upper cross points, the plate extends in an imaginary first intermediate plane. The plate is configured so that a number of first upper cross points on one side of the center axis extends above the first intermediate plane, and a number of second upper cross points on another side of such axis extends below the first intermediate plane.

Abstract: A heat exchanger plate module comprises a pressed heat exchanger plate and a flat plate, and a heat exchanger comprises plural of the modules. The plates comprise first and second longitudinal end portions each having a fluid port, and an intermediate heat exchange portion between the first and second longitudinal end portions. The plates further include a pressed corrugated pattern with alternating tops and bottoms in the thickness direction. The pressed pattern comprises in the first and/or second longitudinal end portions, a first fluid channel pattern leading fluid flow into the fluid port and/or a second fluid channel pattern bypassing the fluid port. In the intermediate heat exchange portion, a third fluid channel pattern fluidly communicates with the first and/or second fluid channel pattern and comprises longitudinally extending wave-shaped pressed lines that form discrete longitudinal extending fluid channels, when the pressed heat exchanger plate is attached to the flat plate.

Abstract: A heat transfer plate includes a first bar engagement comprising a first recess and a first edge portion surrounding the first recess, and a second bar engagement portion comprising a second recess and a second edge portion surrounding the second recess. A part of the first edge portion extends from a first plane to a parallel third plane, and a part of the second edge portion extends from the first plane to a fourth plane. The second and third planes are on the same side of the first plane, the third and fourth planes are a distance from the first plane, and the at least a part of the first edge portion projects from a front of the plate. An edge of the first edge portion defines a first area and an edge of the second edge portion defines a second area, the first area fitting inside the second area.